APA (7th ed.) Citation

Allegra, L., Braga, P. C., & Negro, R. (1993). Methods in Asthmology. Springer Milan.

Chicago Style (17th ed.) Citation

Allegra, Luigi, Pier Carlo Braga, and Roberto Negro. Methods in Asthmology. Milano: Springer Milan, 1993.

MLA (9th ed.) Citation

Allegra, Luigi, et al. Methods in Asthmology. Springer Milan, 1993.